USSR Advisory #38 - Remote DoS attack in Real Networks Real Server. The Ussr Labs team has recently discovered a memory problem in the RealServer 7 Server. By sending specially-malformed information to port 7070 the proccess containg the service will die.
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<P><FONT face="Verdana" size="+1" color="#FFFFFF"> <A name="org"></A>Remote
DoS attack in Real Networks Real Server Vulnerability</FONT></P>
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<P>Real Networks</P>
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Real Networks Real Server</FONT><B><FONT face="Arial, Helvetica, sans-serif" size="2" color="#000000">
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<P>Binary DOS</P>
<P><A href="real/realdie.exe">realdie.exe</A></P>
<P>Source of Binary DOS</P>
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<P><A href="real/realdie.zip">realdie.zip</A></P>
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<B><FONT face="Arial, Helvetica, sans-serif" size="4">"with a 412 byte attack EVERY RealServer is vulnerable to this D.O.S attack"
</FONT></B>
<FONT face="Arial, Helvetica, sans-serif" size="3">USSR Advisory Code: <B>USSR-2000038
</B>
<B>Release Date:
</B>April 20, 2000
<B>Systems Affected:
</B>Real Networks Real Server 7 (linux or Windows)
Real Networks Real Server Pro (linux or Windows)
Real Networks Real Server Intranet (linux or Windows)
Real Networks Real Server Plus (linux or Windows)
Real Networks Real Server Basic (linux or Windows)
Real Networks Real Server G2 1.0
<B>THE PROBLEM
</B>
The Ussr Labs team has recently discovered a memory problem in the RealServer 7 Server.
What happens is, by preforming an attack with specially-malformed information to port 7070
it will cause the proccess containg the services to stop responding.
The Exploit: It will take down the RealServer causing it to stop all streaming media brodcasts, making it non-functional, (untill Reboot)
<B>Vendor Status:
</B>Uninformed of this security issue for the reason of previous reports of Real Networks user privacy invasion.
Now comes to my mind this two pages:
<A href="http://news.cnet.com/news/0-1005-200-1426571.html">http://news.cnet.com/news/0-1005-200-1426571.html
</A><A href="http://news.cnet.com/news/0-1005-200-1435099.html?tag=st.cn.1.">http://news.cnet.com/news/0-1005-200-1435099.html?tag=st.cn.1.
</A>
SPECIAL NOTE: That we take no responsibility for this code it is for educational purposes only.
Vendor Url: http://www.real.com
Program Url: http://www.realnetworks.com/products/basicserverplus/index.html?src=home
Download Url: http://proforma.real.com/rn/servers/eval/index.html?src=home,srvpl_020400,srvntra
Related Links:
Underground Security Systems Research
http://www.ussrback.com
Greetings:
Eeye, Attrition, w00w00, beavuh, Rhino9, SecurityFocus.com, ADM, HNN, Technotronic and Wiretrip.
Copyright (c) 1999-2000 Underground Security Systems Research.
Permission is hereby granted for the redistribution of this alert electronically. It is not to be edited in any way without express
consent of Ussr. If you wish to reprint the whole or any part of this alert in any other medium excluding electronic medium, please
e-mail labs@ussrback.com for permission.
Disclaimer:
The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition.
There are NO warranties with regard to this information. In no event shall the author be liable for any damages whatsoever arising out of or
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Feedback:
Please send suggestions, updates, and comments to:
Underground Security Systems Research
mail:labs@ussrback.com
http://www.ussrback.com</FONT></PRE>
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